Endemic hydrothermal vent species identified in the open ocean seed bank
Endemic hydrothermal vent species identified in the open ocean seed bank
复制标题
DOI：
10.1038/nmicrobiol.2016.86
复制
发表时间：
2016-08-01
影响因子：
28.3
通讯作者：
Perner, Mirjam
中科院分区：
文献类型：
--
作者：
Gonnella, Giorgio;Boehnke, Stefanie;Perner, Mirjam
热液喷口系统是微生物群落的所在地，其中有几种微生物被认为是这类生境特有的。目前还不清楚这些生物如何在地理上遥远的热液环境中定居。基于16S rRNA基因序列，我们比较了16个大西洋热液喷口样品的细菌群落与我们自己的和公开的全球公海样品。通过分析从6300万个16 S rRNA基因中获得的序列，我们可以在公海沃茨中识别的属包含99.9%的喷口读数。这表明，以前观察到的喷口排他性，在大多数情况下，可能是较低的测序深度的人工制品。这些发现进一步阐明了公海作为种子库的作用。它们可以解释预期是喷口系统特有的物种如何能够在地理上遥远的热液生境定居的困境，并有助于我们理解“一切是否真的无处不在”。
Hydrothermal vent systems host microbial communities among which several microorganisms have been considered endemic to this type of habitat. It is still unclear how these organisms colonize geographically distant hydrothermal environments. Based on 16S rRNA gene sequences, we compare the bacterial communities of sixteen Atlantic hydrothermal vent samples with our own and publicly available global open ocean samples. Analysing sequences obtained from 63 million 16S rRNA genes, the genera we could identify in the open ocean waters contained 99.9% of the vent reads. This suggests that previously observed vent exclusiveness is, in most cases, probably an artefact of lower sequencing depth. These findings are a further step towards elucidating the role of the open ocean as a seed bank. They can explain the predicament of how species expected to be endemic to vent systems are able to colonize geographically distant hydrothermal habitats and contribute to our understanding of whether 'everything is really everywhere'.